convert shebang lines: python -> python3
diff --git a/Tools/scripts/parseentities.py b/Tools/scripts/parseentities.py
index 8d93167..5b0f1c6 100755
--- a/Tools/scripts/parseentities.py
+++ b/Tools/scripts/parseentities.py
@@ -1,4 +1,4 @@
-#!/usr/local/bin/python
+#!/usr/bin/env python3
 """ Utility for parsing HTML entity definitions available from:
 
       http://www.w3.org/ as e.g.